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US 6,582,344 B2Granted
Rotary step exerciser
OwnerJack Tanginventor
Life of this patent
Estimating the term…
Abstract
A rotary step exerciser includes a base having an upright support, a rotary rack pivoted to the upright support, a driving shaft pivoted to the rotary rack, two pedals coupled to the driving shaft through one-way bearings, a rocker pivoted to the rotary rack and coupled between the pedals, and means coupled between the driving shaft and the upright shaft for enabling the rotary rack to be turned about the upright shaft when pedaling the pedals.
Claims11
A rotary step exerciser comprising:
- a base;
- an upright shaft fixedly fastened to a top side of said base, said upright shaft having a top side fixedly mounted with a toothed engagement means;
- a rotary rack rotatably pivoted to said upright shaft, said rotary rack comprising a driving axle pivoted thereto, a transmission axle pivoted thereto, a first gear fixedly mounted on one end of said transmission axle and engaged with said toothed engagement means of said upright shaft, a second gear fixedly mounted on an opposite end of said transmission axle, and a toothed engagement means fixedly mounted on said driving shaft and engaged with said second gear;
- two pedals respectively pivoted to said rotary rack at two opposite sides, said pedals including at least one pedal having one end fixedly mounted with an one-way coupling means coupled to said driving shaft;
- a rocker having a middle part pivoted to said rotary rack, and two distal ends respectively pivoted to said pedals for enabling said pedals to be alternatively moved up and down when the user steps on said pedals.
2 more elements
Dependencies are inferred from the claim text.